Answer:
Step-by-step explanation:
The point slope form is expressed as
y - y1 = m(x - x1)
Where
m represents slope
Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis
change in the value of y = y2 - y1
Change in value of x = x2 -x1
y2 = final value of y
y 1 = initial value of y
x2 = final value of x
x1 = initial value of x
The given points are (- 10, - 20) and (1, - 9)
y2 = - 9
y1 = - 20
x2 = 1
x1 = - 10
m = (- 9 - - 20)/(1 - - 10) = 11/11 = 1
To determine the equation, we would substitute x1 = - 10, y1 = - 20 and m= 1 into the point slope form equation. It becomes
y - - 20 = x - - 10
y + 20 = x + 10
